AC3 was a buggy mess on consoles and PCs last time, I'm not sure the platform matters that much anymore. The PC market is a lot easier to deal with in terms of compat and Q/A than it used to be as well. I agree though that if they need extra time, please take it because damn AC3 was a buggy POS at release.
Playing: Xenoblade Chronicles DE, Ys IX, God of War
Watching: Lupin, You me and the Apocalypse, Days of Thunder